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将形状导出为图像

SpreadJS 可以将各种形状（例如基本形状、连接器、自定义形状、相机、迷你图和文本框形状）导出为图像源。SpreadJS 还允许将表单控件形状导出为图像。然而，对于列表框控件，仅导出当前滚动到的区域，而组合框控件中的下拉区域无法导出。

插入形状或形状基对象后，可以使用 shape.toImageSrc() API 获取图像源。

使用代码

以下代码示例展示了如何将电子表格上的形状对象保存为图像源。

// 添加一个形状
var donutShape = sheet.shapes.add('autoShape', GC.Spread.Sheets.Shapes.AutoShapeType.donut, 100, 50, 150, 150);

// 获取形状的图像源
let shapeImageSrc = sheet.shapes.all()[0].toImageSrc();

对于某些形状，不同的设置会导致导出的形状图像大小不同。例如，对于连接器形状，如果线宽不同，则导出的图像大小可能会因线宽而异。

设置

导出图像	说明
当线宽为 1 时
当线宽为 40 时

在这里，这两种形状的长度相同。但由于线宽不同，导出的图像大小也不同。

使用设计器

Spread Designer 还提供了“保存为图片”选项，当您选择一个形状时，可以将选定的形状保存为图像。

以下是将形状保存为图像的步骤：

打开一个工作表
根据需要插入形状
右键单击形状，然后单击“保存为图片”

选择您要保存图像的位置。
命名文件并单击“保存”。

type=warning
注意事项：
目前，导出的文件格式为 PNG，文件名为默认对象名称。例如，chord 1
如果选择了多个形状对象，它们将一起导出，默认情况下导出文件名为 SpreadShapes